5-50PTT system012345678910A7. Connect the PTT relay coupler e andPTT switch coupler a.8. Install the junction box cover.Checking the trim sensor1. Remove the trim sensor, and then Dis-connect the trim sensor coupler a.2. Measure the trim sensor resistance.3. Turn the trim sensor lever a from b toc and measure the resistance as it grad-ually changes.4. Disconnect the gauge harness couplerd.5. Check the wiring harness for continuity.6. Install the trim sensor.7. Connect the gauge harness coupler d,and trim sensor coupler a.Wiring harness continuity:a Terminal 1–e Terminal 1a Terminal 2–e Terminal 2a Terminal 3–Terminal cfeaaTrim sensor resistance (reference data):238.8–378.8 Ω at b9.0–11.0 Ω at c (setting resistance)Wiring harness continuity:a Terminal 1–d Terminal 2a Terminal 2–Groundabcdda